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Assessing the time required for qualitative analysis: A comparative methodological study of coding interview data in
Charlotte Ullrich1,2, Michel Wensing1,2, Nadja Klafke1,2
1Medical Faculty, Heidelberg University, Germany.
Gesundheitswesen (Bundesverband Der Arzte Des Offentlichen Gesundheitsdienstes (Germany))
|April 14, 2025
Summary
Estimating research time is crucial. This study found focused coding time in qualitative analysis, particularly in health services research, roughly matches interview duration, though efficiency can increase with experience.
Area of Science:
- Health Services Research
- Qualitative Methodology
Background:
- Accurate resource estimation is vital for research planning.
- Limited empirical data exists on time investment in qualitative analysis.
Purpose of the Study:
- To empirically document and compare the time required for focused coding in qualitative health services research.
- To establish a reference for estimating timescales in qualitative data analysis.
Main Methods:
- Methodological study documenting time expenditure in focused coding.
- Analysis of 94 semi-structured interviews across five qualitative health services research studies.
- Descriptive data analysis using absolute frequencies.
Main Results:
- Total focused coding time was 76 hours for 94 interviews (52h 44min duration).
- Mean coding time per interview was 32 minutes, with a coding time to interview time ratio of 0.75-1.52.
- Focused coding efficiency tended to increase over time, but significant study-to-study variation was observed.
Conclusions:
- Focused coding time in qualitative health research approximates interview duration.
- Researchers should consider data characteristics and experience when estimating qualitative analysis time.
- Further research is needed to understand how study parameters influence coding efficiency.
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